|
FIG 2. A, A cut line following the course of the mandibular canal was drawn on the dental (axial) CT scans with an effective section thickness of 1 mm. The panoramic and cross-sectional reconstructions were calculated as sections parallel and perpendicular to this line.
B, A cut line for panoramic and cross-sectional reconstructions on an axial T1-weighted (6.2/20) MR image of the same mandible as in A (31° flip angle and an effective section thickness of 0.5 mm) was drawn by following the neurovascular bundle. Note the slight difference of the orientation of the proposed cross sections, which are shown as small lines perpendicular to the cut line. Only exactly parallel cross sections were used for measurement.
|